关键词:

微波, 回收, 聚对苯二甲酸乙二醇酯, 新戊二醇, 二醇解, 粉末涂料, 酯化

Abstract:

The waste poly(ethylene terephthalate) (PET) could be glycolized with neopentyl glycol (NPG) in several minutes with microwave assistance.The glycolized product, an oligomer, was esterified with a certain amount of hexanedioic acid and 1,2,4,5-benzene-tetracarboxylic acid dianhydride.The esterified products could be used as the polyester for polyester-epoxy powder coatings.The influences of the main factors, such as the amount of NPG, the power of microwave, reaction time, on the glycolysis and esterification were studied and optimized.The effects of 1,2,4,5-benzenetetracarboxylic acid dianhydride introduced during the esterification process were also investigated.

Key words:

微波, 回收, 聚对苯二甲酸乙二醇酯, 新戊二醇, 二醇解, 粉末涂料, 酯化